Stainless, Bushed PRW Rocker Arms

My thoughts...
Maybe bad bushing in them, all of them.

Or ..
Were the cam bearings clocked right feeding the heads? shafts oiling hole at stand large enough to feed needed amount to pressurize shafts? Was the cam journal full grooved like many are lately? Side clearance is to help prevent wear but along the same line also keep good pressure at the rocker =.010 side clearance.
Oil through push rods was a good idea etc.
Those are all things that would help 'outside of modifying the oiling at the rocker/shaft'.
Now i wanna double check the rockers on that 360...hmmm.